Adjustable forehead support screw for respiratory mask



FIG. 1 is a perspective view of a head portion of a forehead supportscrew for a respiratory mask according to an embodiment of our design;

FIG. 2 is a front view thereof; and,

FIG. 3 is a right side view thereof.

Where included, broken lines showing environment or structure are forillustrative purposes only and form no part of the claimed design.

The ornamental design for an adjustable forehead support screw for arespiratory mask, as shown and described.